What does Glennis mean?
Glennis \g-lennis, gl(en)-nis\ as a name for girls. Glennis' name origin is Welsh, and Glennis means "holy". Glennis is a variant of Glenys (Welsh). Glennis is also a variation of Glynis (Welsh): related to Glenn and its variants.
Glennis has 1 more different form via Glenys, Glynis: Glynae.
Glennis is a somewhat popular first name for females (#2516 out of 4276, Top 59%) but a rare surname for all people. (2000 U.S. Census)
Below is a graphed comparison of the popularity of Glennis and related names. The only prominent related form of Glennis (#unlisted) ranked in the Top 1000 is Glynis. This girl name was at the height of its popularity during 1960-1969 and has become less popular since. (2014 Birth Statistics)
A recommended similar baby name is Glennie. Like Glennis, this name is not commonly used.